National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Mostly Cloudy

79°F

26°C

Humidity 90%
Wind Speed E 7 mph
Barometer 29.87 in (1010.5 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 22 May 3:54 am ChST
Extended Forecast for

Agat GU

  • Today

    Today: Isolated showers. Mostly sunny, with a high near 86. East wind 11 to 16 mph, with gusts as high as 21 mph.

    High: 86 °F

    Isolated
    Showers

  • Tonight

    Tonight: Isolated showers. Mostly cloudy, with a low around 78. East wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Isolated
    Showers

  • Saturday

    Saturday: Scattered showers. Partly sunny, with a high near 86. East wind 11 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. East wind 11 to 15 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers and thunderstorms. Partly sunny, with a high near 86. East wind 13 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

  • Memorial Day

    Memorial Day: A 40 percent chance of showers. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely. Mostly cloudy, with a high near 84.

    High: 84 °F

    Showers
    Likely

Detailed Forecast

Today
Isolated showers. Mostly sunny, with a high near 86. East wind 11 to 16 mph, with gusts as high as 21 mph.
Tonight
Isolated showers. Mostly cloudy, with a low around 78. East wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Scattered showers. Partly sunny, with a high near 86. East wind 11 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Saturday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. East wind 11 to 15 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Sunday
Scattered showers and thunderstorms. Partly sunny, with a high near 86. East wind 13 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 78.
Memorial Day
A 40 percent chance of showers. Partly sunny, with a high near 84.
Monday Night
A chance of showers. Mostly cloudy, with a low around 78.
Tuesday
Showers likely. Mostly cloudy, with a high near 84.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 78.
Wednesday
A chance of showers. Partly sunny, with a high near 85.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 78.
Thursday
A chance of showers. Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Agat GU
 13.38°N 144.67°E
Last Update:
12:43 am ChST May 22, 2026
Forecast Valid:
4am ChST May 22, 2026-6pm ChST May 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation